Soyuz-U from Baikonur Site 1/5 launched Soyuz T-4 with commander Vladimir Kovalyonok and flight engineer Viktor Savinykh, the last long-duration expedition crew to Salyut 6; they returned 26 May after about 75 days aboard.
- Outcome
- Success
- Orbit
- LEO
- Low Earth orbit
- Payload to orbit
- 6.9 T
- Flight
- 231st
- of 714 Soyuz U flights
- Date and time
- 12 March 1981, 19:00 UTC
- Rocket
- Soyuz U
- Builder
- Progress RSC
- Launch site
- 1/5, Baikonur Cosmodrome, Republic of Kazakhstan
- Payload
- Human Exploration
- International designator
- 1981-023
- Launches in 1981
- 24th of 126
See it in orbit
Space Atlas shows the satellites and rocket stages from this launch in 3D.
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